Centrifugal sprayer.



J. R. WRIGHT. GENTRIPUGA-L SPRAYER. I APPLICATION FILED JULY 13, 1911 WITNESSES mi 9 #9? INVENTOR .W FZ iii W A/fa hzey' I Patented Nov. 26, 1912.

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o vizrso JAME$ B. WRIGHT,'OF SACEMKMEN'FLG, CAQLXFQBNIA.

, CENTEIFUGAL SPRAYER.

Specification of Letters Patent.

is g w/w'm, it may concern:

'Be 1?, known thatl, JAJIFS ll. Vl BIGI-IT, a;

citfen of the'Uniled States, residing at I bscrcinento, in the county of l aso'smento hnd State of California, have invented new and useful Improvements in Centrifugal Siiroyers, of which the following a lication.

This invention relates to Water sprinklers Of l'hB centrifugal or whirling spray type and has the following objects: To construct such a, device in an economical manner--bnc two separate elements being involved in ils construction-and in addition to adapt the device for adjustment to throw either a line or a coarse spray, 'the two structural ole carried away from the point at which it. is

desired to apply the Water. My device is so constructed that the Wafer is thrown in a low src, or trajectory, so that. the full benefit of the momentum imparted is obtained, ii losing carried to the greatest; possiole distones for a, given initial impulse. At the some time it is liable to a minimum degree to be eerriedowsy from the area over which itis desired. the sprinkler shall distribute the Waten To obviate the paddling of Water on the ground immediately adjacent the sprinkler, this being attained by arranging the nozzle in the "form of a crater from the center of which the Water i sflifted and car-- iied away from the sprinkler, Other objeots snd advantages will be apm from the following description, and *1 the drawings, in which,

Figure 1 is a top view of the device, Fig. 2 is a crosssection thereof on the line 2-2 of Fig 1, Fig, 3 is a sectional View of a modification, 1

There is illustrated s sprinkler oomprising a, hollow bodvca'siing 10 of circular form, including the fiat bottom portion 11, the sidewalls 12 of slightly Volute shape on the interior, horizontally, and the crater portion 13 extending inwardly from the Well and comprising the top of the device, a, centrsl vvster outlet or nozzle opening 14- being her ll). All of the parts described are cast integrally in one piece. The locitom portion is provided with so enlarged tim A mg. 18, concentric wit" zle opening l i jeeted through cone member i9, caving i'lie epertme or nozi the e Fro- .i'iing 1;, there s 11 oylindricslly esstein tended threaded loose portion screwed in the opening 18, the apex of the cone meinoe being projected slightly throi'q li the opening 18, as shown, A Q, chamber 21. is Ll ined gradually doced in 'lrsnsverse iinension toward inner termination oi the vololie wall. viill benolcd that the sides of the cone are inclined more from the horizontal than. the adjacent portions of the crater around the ontlei portion 1%, this having an iinoorteni effect \vhichivill be later described The base portion of the cone 19 is recessed, the recess being of rectangular form Where it opens on the bottom of the cone, in order that a suitable implement may be engaged therein for rotation of the cone to adjiist it vertically in the outlet 14:, whereby the qualit oi the spray ejected may be regio listed. To hold the cone in adjusted position, a suitable set screw 201112, be engaged diagonally through the bottom, as shown, although it is not believed this will be neces It will he understood that when the device is connecied and in operation the cone should be adjusied to allow a considerable flow of Water in order to develop the full centrifugal force of the device, although e considerable variation is possible in the adjustment. ll? mode too fine, lic-ivever, it Will be obvious that there will be en in sullieientflow of Water inwardly of the nozzle l? to foclrice the necessary rotation of water in oody member 16 before its end 101* the proper OPQIflllUIl of the invention.

deal open- It is desirable to form the side wall in a slightly volute shape as shown, whereby it gradually converges toward the center, but only to a suiiicient degree to effect displace ment of water already therein to accommodate the incoming water from the nozzle 17, with a minlmum back pressure, as maybe understood. In the operation of the device three forces act upon the water after enter-.

ing the device, the first ofcourse being the impelling force from the service pipe, the second is a lateral force bearing the water inward toward the outlet, caused by the continual ingress of fresh water at the peripheryof the rotated body of water, and the third force is that of the lateral inertia of the water, generally termed centrifugal force. Owing to the rapid entrance and ejectment of water in such devices, where the second force is allowed to act without proper restraint or direction, the effect of the centrifugal force is considerably modilied, and often with considerable detriment. Thus it is, where the cone element in such devices has its walls inclined-too near the vertical the lateral force exerted by the force of the incoming water causes too great an elevation of the spray, or where there is no cone used and the water is allowed to escape at the circumference of a circular chamber having vertical walls, the same effect may be produced. In my device, it will be observed that as the water converges to the escape opening 14, the upper portion or crater of the body member 10 bears downwardly upon the water, offsetting the lifting eli'ect of the side of the cone to a certain extent, whereby the water doesnot tend to fly upwardly as far as it might if the top were horizontal or upwardly inclined toward the center.

The rate of rotation of the water in the device is greatly magnified, as will be understood, by the convergence of the crater and the cone surfaces on the interior of the device and the speed of the water or rate of rotation at the center will be increased be;

yond that at the periphery in a degree almost corresponding to the dlfierence beween the diameter of the opening 14 and the circumference of the chamber in the body member. This is due to the fact that there is nothing but friction with the chambersuritaces tending to lessen the speed of the water, and the friction of the incoming water from the nozzle 17 will tend to maintain this at the same speed until it reaches the escape opening 14. That is, to say, supposing t'hqhircumference of the chamber A e to measure sixinches, and the circumference oflthe opening1ftone inch and a half; the water moves at the same speed in rotating around the narrowerspacc as it does in mov- 511g around the larger boundary, it would of necessity maho the circuit of the orifice in ion euarter renamed to circulate around the outer wall of the device. It is believed, however, that the rate of rotation is increased slightly more than in the ratio radial movement of the water is increased.

Any water tending to trickle over the surface of the device from the opening 14 will drain down the sides of the crater to the outgoing water, by which it will be caught up and carried outwardly from the device itself, whereby the formation of a puddle therearound may be avoided.

In Fig. 3 there 15 illustrated a modification of the device in which the member isprovided with a recessed rim or cap portion 25, forming a continuation of its outer surfaces, and so positioned, that when the cone is lowered in the body member to give the maximum flow of water the curvature of the cap side 25 will be concentric with the adjacent edge portion of the opening 14 and the radial movement of water escaping therefrom facilitated. This cap is of such size that it may be readily projected through the opening 14 in the'assemblage of the device.

It should be noted that by the spiral form of the outer wall, as shown in Fig. 1,some of the back pressure which would be involved by the displacement of rotating water by the newly entering fluid obviated, for it will be readily appreciated that the water circulating in the device striking the incoming stream at an angle would tend tocut it oil to some extent, and by the gradual convolution of the side Wall together with the deflecting effect of the nozzle 17, the direction of movement of the two bodies of water is made as nearly co-incident as possible. By making the cone member so readily 're movable, the interior of the device may be easily cleaned, and should it become choked by matter in the service water no difliculty would be met with in cleaning out the ob struction. The device would of course preferably be made of such metal as will not corrode easily, whereby the adjustment of the cone in the body member will be easy at all times, and the nozzle will not tend to be come fouled by scale and the like.

It should be explained that by adjusting the cone element to a low position in the 'form of device in Fig. 3, the outwardly flared portion will give the whole spray a more definite direction with respect to the horizontal. while with the cone adjusted. with its conical surface in proximity with the opening a more diffused spray is produced,

and at the same time a considerable-range:

of fineness is obtained in either the diffused or definitely directed spray.

What is claimed is: j 1. In a device of the class described, the

combination of a hollow body having a crater-liketop provided with a central outlet, opening, the inner surface of the top inchning downwardly toward the opening on all sides, the body having also a tangential inlet passage; and a cone element carried by.

the bottom of the body projected through the opening and shaped for projection of Water throughthe opening at an angle to the adjacent upper surface of the 'top,

' whereby fluid engaged with the outer suring therethr'ough, and a top portion having a concentric escape opening, the outer surface of'the top sloping upward from the, escapeopening, a removable cone element having its apex projecting upwardly through the escape opening and having a cylindrical lower portion threaded and engaged in the enlarged opening, and adapted for vertical adjustment by rotation, said apex being enlarged and connected to the lower portion of the cone element by a ro-- duced portion having a curved and upwardly flared surface, the upper flared surface being adapted to tleflcct water laterally from the device at a'dertain angle with respect to the horizontal, the edge of said outlet opening being adjustalile relatively hy adjnstment of the cone eleinent togwa rd the conlcal surface for productionof a diffused spray, and toward the flared portion for production of a spray of more definite d ection with respect to the horizontal.

In testimony whereof I have herennto set my hand in presence of two subscribing Witncsses. v v

' JAMES R. WRIGHTJ Witnesses:

ROY L. BROOKE, CHARLES H. AUG. 

